Patent EP0619668A2 successfully refreshed from Google Patents.
Patent US3294989A successfully refreshed from Google Patents.
US3294989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power conversion system
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1961-09-25
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Granted: 1966-12-27
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Expires: 1981-09-25
Abstract
No abstract record available.
Inventors
- 👤 Hans P Eichenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:08
CPC Classifications
H; H02; H02K; H02K44/00; H02K44/08; H02K44/085
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
90 words
AN ENERGY CONVERSION SYSTEM COMPRISING A NOZZLE HAVING AN INLET AND AN OUTLET, GAS INJECTION MEANS DISPOSED AT SAID NOZZLE INLET WHICH IS ADAPTED TO BE CONNECTED TO A SOURCE OF HIGH PRESSURE GAS AND TO INJECT THE GAS INTO A STREAM OF ELECTRICALLY CONDUCTIVE LIQUID FLOWING THROUGH SAID NOZZLE, A MAGNETOHYDRODYNAMIC GENERATOR CONNECTED TO SAID NOZZLE OUTLET, SEPARATING MEANS CONNECTED TO SAID GENERATOR EXHAUST FOR SEPARATING THE LIQUID FROM THE GAS, AND CONDUIT MEANS CONNECTED TO RECEIVE LIQUID FROM SAID SEPARATING MEANS AND RETURN IT TO SAID NOZZLE INLET.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |